Mechanism for grinding harvester-sections.



No. 672,675. Patented Apr. 23, 1901.

J. H. KENNEDY.

MECHANISM FOR GRINDING HARVESTER SECTIONS.

(Application filed Aug. 18, 1900.)

(No Model.)

UNITED STATES EEIcE.

PATENT JAMES H. KENNEDY, OF ROCHESTER, NEW YORK, ASSIGNOR OF ONE-HALF TO FRANK H. l-IANLON, OF BATAVIA, NEW YORK.

MECHANISM FOR GRINDING HARVESTER-SECTIONS.

SPECIFICATION forming part of Letters Patent No. 672,675, dated April 23, 1901.

Application filed August 18, 1900. Serial No. 27,331. (No model.)

To a, whom it may concern.-

Be it known that I, JAMES H. KENNEDY, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, haveinvented new and useful Improvements in Mechanism for Grinding Harvester-Sickle Sect-ions, of which the following is a specification.

My invention relates to mechanism for grinding harvester-sickle sections.

One purpose of said invention is to provide a sickle-grinder with a rest or support to sustain the greater portion of the dead-weight of the sickle-bar while its knives are applied to the grinding-wheel, my special object being to enable the rest to hold the sickle-bar at any one of several different angles with the plane of rotation of said wheel, whereby the angle or bevel at which the sickle sections are ground may be varied as circumstances require.

Itisa further purpose of my said invention to provide such a grinding mechanism with a reversible rest whereby the parts may be operated either by the right hand or by the left and the angle or bevel at which the knives are ground be capable of variation in either position.

It is my further object to provide a grinding mechanism of the type named with an adjustable rest adjacent to the grinding-wheel, whereby the diameter of the latter may be varied or other conditions provided for. I aim also to make the rest-bar capable of quick and easy attachment to and detachment from the frame which supports the grinding mechanism in either of the two positions in which it may be used.

The novel features of said invention wil 'beflilly explained hereinafter and then particularly pointed out and defined in the claims at the end of this specification.

For the purpose of the following description reference is had to the accompanying drawings, in which Figure 1 is a perspective view showing a grinding mechanism equipped with my invention. Fig. 2 is an inverted plan view of the same. Fig. 3 is a perspective view of the rest-bar removed from the frame. Fig. 4 is an elevation showing the construction of the frame which enables it to be mounted on the wheel-rim of the harvester or mower.

The reference-numeral 1 in said drawings indicates the frame of the grinding mechanism, which is provided with a lower portion the under face of which has a recess 2, forming a dovetail or hooks 3 at one end to engage the rim of the driving-wheelof the harvester. At its other end a clamping-screw 4: is provided, having its end swiveled in a block 5, ,which is movable between depending flanges 6. By placing the frame on the rim of the driving-wheel of a harvester or mower, with the hooks 3 engaging one edge, and then screwing the block 5 up against the opposite edge the frame will be very firmly held in position. At the end of the frame in which the books 3 are formed and which is wider than the opposite end is astud 7, upon which is mounted a large gear 8,which drives a small pinion 9 on the end of a shaft 10, which has bearing in the upper end of an upright 12, rising frpm the lower part of the frame on the end which carries the gear 8. At its other end the shaft 10 is provided with a reduced portion 13 and a nut 14, by which a grinding-wheel can be mounted on it. Upon the lower frame, at a suitable distance from the upright 12 and near the other end of said frame, is a short vertical post 15, which supports the shank of a vertically-adjustable rest 16, which is held at any point of adjustment by means of a set-bolt 16 In the frame 1, between the upright 12 and post 16, is formed an opening 17 close to the end of an upwardlyarched section of the frame 1 at the foot of the upright 12.. This arched section forms a recess 18 in the under surface of the frame, nearly semicircular in 0 cross-section. Said recess receives the end 19 of a round rest-bar 20, the latter being bent at a right angle to the end 19. When inserted through the opening 17 and placed in said recess 19, the bar 20 is supported in a concave 5 seat 21, formed in the upper face of the frame 1, and lies in a substantially horizontal position at right angles to the shaft of the grinding-wheel. The rest-bar is straight and of a length proportioned to that of the sickle-bar. At its unsupported end it has an adjustable cross-head 22, which extends equally on both each other.

sides of the bar. At the endsof the crosshead, which is fiat, are formed a series ;of notches or recesses 24, equally separated from These notches are duplicated in the opposite edges of the cross-head.

In using the grinding mechanism the sicklebar is placed in one of the notches 24, the plurality of the latter enabling the knives to be ground at any bevel or angle desired. The

rest-bar may be turned to extend on either. side of the frame 1, a concave seat 21 being provided upon each side of the opening 17.

Theadjustable rest 16 is used when the knives are to be ground on their lower faces, and being capable of vertical adjustment it v can be used with grinding-wheels of difierent diameters.

The rest-bar can be easily and quickly removed and attached, and having both edges notched or recessed it can be used on either side of the frame, as a right-hand or as a lefthand rest.

As above stated, the cross head 22 is adjustable on the rest-bar 20, the said crosshead being provided with an opening 25 ad- 1 jacent to its center, through which the restbar 20 passes, and with a bracket 26, through which a set --screw 27 passes, adapted to enlong sickle-bar is to be sharpened the cross 1 head 22 willbe moved out and locked to the rest-bar 20 adjacent to the outer-end of the latter, whereas when a comparatively shortsickle-bar is to be sharpened the cross-head 22 will be moved and locked to the rest-bar 20 at a pointadjacent to the frame 1.

This ad- 2 Having thus described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is- 4 1. In a mechanism for grinding sickle-sec tions, the combination with a supportingframe, of a rest-bar havingits end bent at a right angle to said bar and engaging a recess in thelower face of the frame, the bar being sustained by a concave seat adjacent to said opening, substantially as described.

2. In a mechanism for grinding sickle-sections, the combination with a frame having an opening adjacent to a semicircular recess in its lower face, of a rest-bar having its end bent at a right angle to said bar, the other end of the latter having a cross-head provided with notches or recesses in its opposite edges, substantially as described.

3. A rest-bar for a sickle-grinding mechanism, having at one end a cross-head extending equally on both sides of thebar and provided with notches, or recesses in both edges of said cross-head at or near the ends of the latter, substantially as described.

4. A rest-bar for sickle-grinding machines, having an adjustable cross-head thereon provided with notches or recesses, as and for the purpose set forth.

5. In sickle-grinding mechanism, the combination with a supporting-frame, of a restbar adapted to be .secu red to said frame,,and an adjustable cross-head onsaid rest-bar having a series of notches therein, as and for the purpose set forth.

In testimony whereof I have hereunto set JAMES H. KENNEDY. Witnesses:

WM. M. STOCKBRIDGE,

GEO. W. REA.

.my hand in presence of two subscribing wit- 

